E.S.
One of my twins did this every few days and the doc kept saying it was reflux, but reflux meds didn't work. I, and my Mom, suspected allergies. Pediatrition sent us to an allergist that said that if she were allergic she would get a rash right after eating or drinking the allergen. BS. A friend recommended a great gastroenterologist at Children's Hospital. It was a few weeks before we could get in so I decided to try her on goats milk in the interim. No vomit for two weeks, no projectile, from the mouth and nose vomit of any kind! I hated that kind! I always worried she would suffocate before I could suction her nose!
Anyway, awesome doc (gastro) asked about what she ate from the time she was born, when things seemed bad, and when was worse, etc. Very thorough. Love her! I told her that I had switched her to goats milk just to see what happened. She said,"You did the right thing, and yes she is allergic to milk and will probably outgrow it in time (around 5yrs.)" She also said the allergist that said she wasnt allergic was very wrong. She said that a childs body will hold onto something instead of digesting it, if it doesn't want it (is allergic). Finally, when there is to much in the stomach and the body HAS to absorb it you get the allergic reaction when its absorbed. The body rejects the allergen, hence the vomit reaction. Delayed absorption= delayed reaction. She has vomited one time since then and both girls were sick with a stomach bug!